ML features NOT advertised?

Just today I 'discovered' -- by sheer accident, a feature that I had not read about anywhere on the web:

When attempting to "Share Screen" with my ML-installed macbook pro to a ML-installed iMac, I got a choice -- whether to share the same screen, or log-in as a different user!

I tried logging in as a different user -- and sure enough -- I was logged in and fiddling with folders and stuff while my colleague was going about her stuff on the same iMac -- but we were using completely different desktops/accounts.

Is this a new feature, and if so ... what's it called? I've never seen it in Lion. What are the requirements of this feature, as I couldn't get the same options on my ML-installed mac mini. Perhaps a minimum of two user accounts needed?

Just today I 'discovered' -- by sheer accident, a feature that I had not read about anywhere on the web:

When attempting to "Share Screen" with my ML-installed macbook pro to a ML-installed iMac, I got a choice -- whether to share the same screen, or log-in as a different user!

I tried logging in as a different user -- and sure enough -- I was logged in and fiddling with folders and stuff while my colleague was going about her stuff on the same iMac -- but we were using completely different desktops/accounts.

Is this a new feature, and if so ... what's it called? I've never seen it in Lion. What are the requirements of this feature, as I couldn't get the same options on my ML-installed mac mini. Perhaps a minimum of two user accounts needed?

OK, I managed to get it working on my mac mini. Since I've used screen sharing previously with these machines, I think my computer automatically connects with screen sharing when the other computer is logged in with the account I'm using to connect to it.

In otherwords, the choice wouldn't pop up then.

HOWEVER, I remember that the account I logged in as on the iMac was an admin account, and my colleague was using the default user-restricted account I set. So I thought this might have something to do with simultaneous log-in.

It does.

If the target computer is logged in with a default user account (non-administrative), I get the option to log in simultaneously. Otherwise, if the other computer is logged in with an admin account, I don't get the option to choose.

MacRumors attracts a broad audience
of both consumers and professionals interested in
the latest technologies and products. We also boast an active community focused on
purchasing decisions and technical aspects of the iPhone, iPod, iPad, and Mac platforms.